How do I set a column value to NULL in SQL Server Management Studio?

Question

How do I clear the value from a cell and make it NULL?

Answer 1

Try this code.

Query:

Update myTable set MyColumn = NULL

The above query will set the entire column to null as per the question's title (i.e. To set a column value to NULL in SQL Server Management Studio).

You can use this query, to set the specific row on a specific column to null this way:

Update myTable set MyColumn = NULL where Field = Condition.

Here, the above code will set the specific cell to null as per the inner question (i.e. To clear the value from a cell and make it NULL).

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Answer 2

For instance, given the Employees table, if you wanted to set the MiddleName column to NULL for an employee whose EmployeeID you knew - You would rely on the UPDATE statement in SQL Server Management Studio (SSMS) and execute an SQL command like this.

UPDATE Employees

SET MiddleName = NULL

WHERE EmployeeID = 1;  -- Replace with the actual condition